David edwards



'TQALL wioM 1T MAY coNcE'uNe Be it known that I, DAVID EDWARDS,ef the city, county, vand State of New York,` have 'invented a certain DAVID EDWARDS, ork NEW YORK, N. Y'.

Letferslmailvo. 76,424, dated April 7,1868.

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new andruseful Improvementfor Putting Street and othervBailrcad-Cars on their Tracks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing -forming part of this specification, and in which-4 l Figure 1 represents a side elevation of a street-,car on a. line or track of rails, with my improvement shown in section at cneend applied-thereto, and

Figure Zan end elevation of the same, with my improvement also in section, or partly so. Like letters indicate like parts in .both figures.

In the case of a car or carsrunning oil" the track, as is so common or frequentan occurrence on vstreet andY other railroads, it has' usually `or heretofore beenva matter of much labor and no little diiculty,accompanied by great loss of time, to replace them onv the track. v e

The object of my invention is to obviate this difliculty, and the nature of my invention consists'in arranging at either or both ends of the car, a wheel or roller, having itsfaXis'transverse to' that of the running-wheels of the car, and made capable of being raised vor lowered, so that when the caris on the track, 'it is free from contact4 with the ground, but when the car is off the track, it takes its bearing on the ground, and, lifting the end of the car, permits ofaneasy lateral swing or movement of the car back or tothe track.

Referring to the accompanying drawing, A represents the 4vbody of a street-car ;l B B its running-wheels, and C C the front and rear platforms of the same. Either or both of these platforl'ns I provide with a case or frame, D, in a line, which is intermediate and preferably central to the running-wheels, the' same carrying a vertical screw, E, furnished with a crank or operating-wheel, F, and serving, accordingly as itis rotated in one direction or the other, to yraise or lower `a screw-box, G, to which the case-D may act as a guide. I Instead of the screw and screw-box Gr, other mechanical appliances` answering as equivalents may be used, The lower end of the screw-box is made to carry a'rolleror wheel, H, o r other suitable rest, so that when the screw-box is sniiicicntly depressed, it will, by its bearing on the way'between the rails of the track, raise'the end of the car to -the necessary height, for, by swinging the car laterally,'replaciug its running-wheels when off the track, on the rails. c I prefer, however, that this rest should be a roller or wheel, H, with its axis arranged transversely, or thereabouts, to that ci' the running-wheels, to facilitate the rolling or running of the end ofthe car laterally to bring its running-wheels over the track, when the screw E may be worked to lower the running-wheels on to the rails, and raise the wheel H free from allcontact-with the ground, or ordinary obstacles lying thereon, as'represented by black lines in fig. 2, Athe lowered condition of said roller or wheel being shown by red lines in the same gure. By these means may a car be rapidlyand easily replaced on the track.I

What I claim asmy invention, and desire to secure by Letters Patent, isfl. The combination, with the car, at or near either or both of its ends, of a transverse intermediate groundrest or bearing, capable of-being raised or lowered, substantially as and for the .purpose specitied.

2. The combination, with a street or other railroad-car, of the screw E, screw-box G, and wheel or roller'H, the latter having its axis arranged transversely, or thereabouts, to that of the running-wheels, also intermediately, ofthe same, and capable of being raised or lowered, essentially as herein set forth.

DAVID EDWARDS.

Witnesses:

A. LE CLERC; '-J. W.- Cocinas.A 

